Calculator



FIG. 1 is a top perspective view of a calculator showing my new design, having a display cover open to act as a stand;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view of the calculator, with the cover closed;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear end elevational view thereof. 

The ornamental design for a calculator, as shown and described. 